Anchor.



No. 857,094. PATBNTED JUNE 18. 1907. w. MoBRIDE.

ANCHOR.

APPLICATION FILED OUT-5. 1906.

UNITED STATES PATENT OFFICE.

WILLIAM MoBRIDE, OF PORTLAND, MAINE, ASSIGNOR TO THE THOMAS LAUGHLINCOMPANY, OF PORTLAND, MAIN E, A CORPORATION OF MAINE.

ANCHOR.

Specification of Letters Patent.

Application filed October 5, 1906. Serial No. 337,591.

No. 857,094. Patented June 18, 1907.

T0 (0Z7 whom, it may (Jo/warn:

Be it known that I, WVILLIAM MCBRIDE, a citizen of the United States,residing at Portland, in the county of Cumberland and State of Maine,have invented certain new and useful Improvements in Anchors, of whichthe following is a specification, reference being had therein to theaccompanying drawing.

This invention relates to foldable anchors, and has for its primaryobject the provision of improved means for fastening the parts thereofin their opened or closed position.

A convenient embodiment of the 'inven tion comprises, the combinationwith the shank and foldable stock or fluke arms, of an anchor, of apivot pin for said arms having a head or abutment at one end, and anadjustable fastening device at the other, whereby said arms may beclamped in their opened or closed position.

More specifically, the invention further consists in providing the pivotbolt above referred to with means for preventing turning of the samewhile the fastening device (preferably a nut engaging a threaded portionof said bolt) is being adjusted, and means for preventing completeseparation of the fastening device from the bolt, whereby accidentalremoval of the bolt from operative association with the foldable armsand shank is permanently prevented.

The foregoing as well as other novel features of construction andarrangement will be apparent from the detailed description hereinaftercontained, when read in connection with the accompanying drawingsforming a part hereof, and wherein the before referred to embodiment ofthe invention is illustrated.

In the drawings: Figure l is a plan view of the anchor, Fig. 2 is a sideelevation, Fig. 3 is a sectional view through the inner or disk portionsof the fluke arms; and Fig. 4 is an enlarged elevation of the lowerportion of Fig. 2 with the head of the clamping bolt removed.

Referring more specifically to the drawings wherein like referencecharacters designate corresponding parts in the several views, Arepresents the shank, B the opposite arms of the stock and G theopposite arms of the flukes of an anchor which may be of any ordinary orpreferred. type, and formed of any desired material. As shown, both thearms B and C are pivoted and. adapted to be opened to the position shownin full lines or closed to the position shown in dotted lines, the meansfor pivotally securing the stock arms to the shank being indicated at D,and the means for correspondingly pivoting the fluke arms, at E.Inasmuch as these pivoting means D and E are identical in construc tionand arrangen'ient, a description of one will su'l'lice for both, andtherefore, in the following matter reference will be had only to thepivoting of the lluke arms \Vith especial reference to Figs. 3 and 4.,it will be noted that the adjoining ends of the shank A and arms C whichconstitute the crown portion F of the anchor, are respectively formedinto substantially circular disks 1 adapted to be superposed wherebytheir apertured central portions II may register for the reception andfree passage of a clamping bolt J. This clamping bolt has a head K atone end forming an abutment adapted to engage the outer surface of thedisk G of one of the fluke arms, and a threaded opposite end .IJ adaptedtobe adjustably engaged. by a clamping nut M for forcibly impinging uponthe outer surface of the disk G of the opposite fluke arm C to clampsaid arms opened or closed, as is obvious.

To facilitate the adjustl'nent of the nut M upon the bolt J, the latteris prevented from turning through the medium of a lug N projeetinginwardly from the head Ii and engaging a complementary notched portionin the outer face of the disk against which said. head abuts. It will benoted from Fig. 3 that the lug N is of a length greater than the rangeof adjustment of the nut M on the threaded stem L of the bolt J wherebythe lug is at all times in engagement with the notched portion 0 to becontinually held against rotation.

Shoulders P on the fluke arms arranged to engage the shank A prey'entexcessive opening movement of the said fluke arms.

Owing to the arrangement above described, it will be appreciated thatthe arms of the anchor may be opened or closed, as the case may be, andsecurely fastened in their posi- 1 tion, easily and expeditiously, andby means of a simple and durable arrangement of parts. i A highlydesirable characteristic of the l present invention resides in theprovision of means for preventing complete separation of the clampingnut M from the pivot bolt J, this means in the present instance, being ariveted or offset portion Q at the end of the bolt constituting anenlargement positively preventing the unscrewing of said nut from thebolt, while permitting adequate play of the former to enable the partsto be loosened and the arms adjusted.

I claim:

1. The combination with a shank and fold able member of an anchor, ofmeans for pivoting said member including a bolt having an abutment atone end, and a threaded portion at its opposite end, said member havinga slotted portion and the bolt having a lug adapted to engage saidslotted-portion, and a clamping nut engaging the threaded portion of thebolt whereby the member may be clamped in position, in combination withmeans for preventing complete separation of the clamping nut from thebolt arranged to restrict the range of movement of the nut to an extentless than the length of the lug on the bolt whereby to constantlypreserve the engagement between said lug and slotted portion of thefoldable member to hold the bolt against turning movement during'theadjustment of the clamping nut.

2. The combination with a shank and foldable member of an anchor, ofmeans for pivoting said member including a bolt having an abutment atone end and a threaded portion at its opposite end, and. a clamping nutengaging said threaded portion whereby said member may be clamped inposition, in combination with co-operating instrumentalities betweensaid bolt, and a part of the anchor holding said bolt against rotarymovement during the adjustment of the clamping nut, and means forpreventing complete separation of the clamping nut from the boltarranged to restrict the range of movement of the nut whereby toconstantly preserve said co-operating instrumentalities in operating.

engagement.

3. The combination with a shank and foldable member of an anchor, ofmeans for pivoting said member comprising a threaded bolt having aclamping nut thereon, whereby the member may be held in position, thebolt bein extended a substantial distance beyoncI the nut in itsclamping osition to en able the nut to be released om clamping positionwithout removal from the bolt, and means on the bolt for preventingaccidental removal of the nut therefrom, in combination with meanspreventing rotary movement of the bolt when the nut is being adjusted.

In testimony whereof I afliX my signature in presence of two witnesses.

WILLIAM MCBRIDE.

Vitnesses:

C. R. DUFFETT, FREDERIO J. LAUGIILIN.

